Smoke control



Nov. 14, 1950 J. GADZUK 2,529,491

SMOKE CONTROL Filed March 4, 1947 2 Sheets-Sheet 1 WIND DIRECTION 2 8 4i i 24 26 5 L'/ RH ER! 20 52 FIG. I

27 27 28 I2 30 28 a0 32 FLIGHT DECK'; 32

mmvrm JOHN GADZUK J. GADZUK SMOKE CONTROL Nov. 14, 1950 2 Sheets-Sheet 2Filed March 4, 1947 FIG. 3

INVENTOR. JOHN GADZUK Patented Nov. 14, 1950 VUNITED STATES PATENTOFFICE,

SMOKE CONTROL John Gadzuk, Drexel Hill, Pa. Application March i, 1947,Serial No. 732,360

2 Claims; (01. 98 58) (Granted under the act of March 3, 1883,'as

This invention relates to directional smokecontrol apparatus for use onaircraft carriers, other vessels and land installations.

On aircraft carriers, especially during combat, landing of planes isdifficult and accidents frequently occur. rier must be heading into thewind for landing, smoke and fumes from the smoke pipe trail the carrier,obscuring the pilots vision and impairing breathing, thereby makinglanding more hazardous. On carriers having dual port and starboard smokepipes, the flight deck can be kept clear of smoke and fumes by means ofmanuallyoperated by-pass dampers that allow smoke to be discharged fromone side of the ship only. However, the controls for these dampers arebelow the flight deck and during changing. wind direction there issometimes confusion as to which position the damper should occupy.

It is an object of this invention to provide an apparatus forautomatically controlling dual smoke pipes on an aircraft carrier todischarge smoke and fumes to the leeward side of the carrier.

On passenger-carrying vessels it is desirable to eliminate the nuisanceof smoke and fumes especially if the decks are used by passengers. Thedecks can be kept clear of smoke and fumes by providing the vessel witha multiple smoke pipe having outlets terminating on the port andstarboard sides and/or aft and providing by-pass dampers that allowsmoke and fumes to be discharged from a selected outlet only. Smoke andfumes can be automatically discharged to the leeward side of the vesselby means of the invention described herein.

It is another object of this invention to provide multiple smoke pipeson vessels other than aircraft carriers and to provide these smoke pipeswith an apparatus for controlling automatically a selected outlet todischarge smoke and fumes to the leeward side of the vessel.

On land installations whereby combustion gases and/or manufacturingfumes and gases are discharged to the atmosphere, it is sometimesnecessary to isolate a certain section of the plant or neighborhood fromthe contaminating and nuisance effect of these gases. The discharge ofthese gases can be controlled and isolated by providing multipledischarge ducts and/or smoke pipes having outlets terminating at variousstrategic points and providing- Iby-pass dampers that automaticallyallow smoke or commercial fumes and gases to be discharged to theleeward side only. The automatic control is by means of the inventiondescribed herein.

It is another object of this invention to provide multiple smoke pipesor discharge ducts for the control of smoke, gases and fumes dischargedto the atmosphere and to provide an apparatus Because the plane and thecaramended April 30, 1928; 370 O. G. 757) for automatically controllingdischarge of the smoke and fumes to the leeward side.

Further objects and advantages of this invention, as well as itsconstruction, arrangement, and operation, will be apparent from thefollow: ing description and claims in connection with the accompanyingdrawings, in which:

Fig. 1 is a plan view of one embodiment of this invention as adapted toa smoke pipe havingtwo. outlets;

Fig. 2 is a front view of the apparatus shown in Fig. 1; and, r

Fig. 3 is a wiring diagram of the embodiment shown in Fig. 1. I Y

There is shown in Fig. 1 and Fig. 2 a smoke pipe I 1 having outlets onopposite sides of a ship, two Wind-direction indicators I2 and I4, suchas weather vanes. mounted above the deck and ex posed to the wind, aby-pass damper I6, an electric motor I8 geared to operate damper I6, andrelays 20 and 22 and limit switches 24 and 2.6 to control motor I8.

Wind-direction indicators I2 and'l l each consist of a vane 21 adaptedto turn to point into the wind, a vertical shaft 28 on which the vane ismounted, and attached to vertical shaft 28 a spring contact 30 that canmake contact with contact element 32. Contact elements 32 are so placedin wind-direction indicators I2 and I4 that when the wind is blowing inthe direction shown, indicator I4 completes an electric circuit to causemotor I8 to turn damper I6 to position shown and when the wind isblowing from the other side of the ship, indicator I2 completes anelectric circuit to cause motor I8 to make damper I6 to the oppositeposition.

The control circuit for motor I8 is shown in Fig. 3. Spring contact 30is shown making contact with contact element 32 in wind-directionindicator I4 but not in wind-direction indicator I2. Therefore, relay 22is energized causing the contacts to close, thereby connecting motor I8to the power supply to drive damper I6 to the position shown in Fig. 2.When damper I6 reaches this position, it operates limit switch 28 tobreak the electric circuit and disconnect motor I8. When the wind shiftssufficiently to cause spring contact 30 and contact elements 32 ofwinddirection indicator I2 to touch, relay 20 is energized and itscontacts close. The contacts of relay 20 connect one of the motorwindings I8a in the same manner as before, but winding I822 is reversedthereby causing motor I8 to rotate in the opposite direction until thecircuit is broken by limit switch 24.

The Wind-direction indicators I2 and I4 do not make contact when thewind is directly ahead or directly behind the ship so that indicators I2and I4 cannot both make contact at the same from the main smoke pipe tothe opposite side of' the ship can be installed. This additionalsmokepipe is to be used in conjunction with this invention and onlyduring landing of plane.

It is to be understood that various modifications and changes may bemade in this invention without departing from the spirit or scopethereofas set forth in the appended claims.

The invention described herein may be manufactured and used by or forthe Government of the United States of America for governmental purposeswithout the payment of any royalties thereon or therefor.

What is claimedis:

1. Apparatus for controlling discharge of gas from a smoke pipe, saidapparatus comprising a first outlet in the smoke pipe and second outletin the smoke pipe opposed to the first outlet; a damper movable intofirst position to open the first outlet and close the second outlet andmovable into second position to open the second outlet and close thefirst outlet; an electric motor for rotating in one direction to movesaid damper into first position and for rotating in the oppositedirection to move said damper into second position; an electric circuitincluding said motor, including limit switches for preventing movementof said damper beyond first position and second position, and includingselector means for controlling the direction of rotation of said motorto move selectively said. damper into first position or second position,and means responsive to the direction of the Wind for operating saidselector means.

2. Apparatus for controlling discharge of fluid from a'conduit, saidapparatus comprising a first outlet in the conduit and a second outletin the conduit opposed to the first outlet; a valve movable into firstposition to open the first outlet and close the second outlet andmovable into second position to open the second outlet and close thefirst outlet; an electric motor for retating in one direction to movesaid valve into first position and for rotating in the oppositedirection to move said valve into second position; an electric circuitincluding said motor, and including selector means for controlling thedirection of rotation of said motor to move selectively said valve intofirst position or second position; limit means for preventing movementof said valve beyond first position and second position; and meansresponsive to the direction of fluid flow externally of said conduit foroperating said selector means.

JOHN GADZUK.

REFERENCES CITED The following references are of record in the

